Gas-stove.



C. B. STILWELL.

GAS STOVB.

APPLIOATIVON FILED 113.24, 1909.

984,314. Patented Feb. 14,1911.

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TJNTTTB CHARLES B. STILWELL, OF WAYNE, PENNSYLVANIA.

GAS-STOVE.

Specification of Letters Patent.

.Patented Feb. let, 1911..

Application filed February 24, 1969. Serial No. 479,721.

To all whom it may concern:

Be it known that l, CnAnLns ll. Srinwnnn, a citizen of the UnitedStates, residing at Wayne, in the county of Delaware and State ofPennsylvania, have invented certain lmln'ovements for (las-Stoves.

My invention comprises improvements for gas stoves whereby the gas isautomatically turned olf upon removing a vessel or other article whichhas been placed upon the stove in position to be heated.

he cl'iaracteristic features of my improvements are fully disclosed `inthe following description and the accompanying drawings in illustrationthereof.

fln the drawings, Figure 1 is a plan view of apparatus embodying myimprovements with parts broken away; Fig. 2 lis a sectional elevationthereof taken on the line 2-2 of Fig. 1; and Fig. 3 is a sectionalelevation on the same line showing a second position of the mechanism.

The apparatus, as illustrated in the drawings, comprises the gas supplypipe 1, the burner 2, the discharge duct or nozzle 3 leading from thesupply pipe to the burner, the valve t having the lever 5 forcontrolling the flow through the duct, and the rest (3 for supporting anarticle to be heated as the skillet 7.

A lever arm S, having the ournal 9 adapted to rock in the bearings 10,.is provided with a bent outer end which is adapted to move through theslot 11 in the rest (i, and fixed to the journal 9 is the arm 12, whichacts as a bearing for the oscillating detent 13; the detent beingconnected to the arm 12 by the pintle 14 and resting normally on theseat 15 thereof.

A slide 1G, having the lug 17 thereon, is adapted to reciprocate in theways or bearings 18`of the box 0r casing 19, which is supported on thestove bar 20, the casing inclosing the parts 12, 13 and 17 and having inthe walls thereof the bearings 10. An arm 21 on the rear end of thecasing and an arm 22 on the forward end of the slide are connected by acoiled spring 23 which acts to hold the slide in the position shown inFig. 2. A tension member, as the chain 24, connects the forward end ofthe slide 1G and the arm 25 of the lever 5.

Vhen the apparatus is not in use, the coiled spring 23 holds the slide16 and valve t in the positions shown in Fig. 2. Vhen it is desired touse the apparatus, the

l lever 5 is operated to place the valve -l and lslide 1.(3 in theposition shown in Fig. Il, the detent lil now engaging the lug 1T, whereit is held by placing the vessel T on the. rest t3 and the lever S.lVhen the vessel T is removed and the lever S released, the spring 23draws back the slide and closes the valve, the lug acting through thedetent to turn the crank-lever in its bearing until the detent is liftedout of engagement with the lug when the, lever drops back to its normalposition.

.lt will be observed that the slide tti by the the retraction of spring225, from the position shown in Fig. I) to the position shown in Fig. 2,elevates the arm S to the dotted .line position shown in Fig. 2 for aninstant only. The arm falls back so that its topmost part lies in theplane of the stove`s top or rest (3 as soon as the lug 1T has passedunder the detent til and it occupies this position at all timesexcepting during the insta nt of its elevation by the rearward movementof the lug. (lonsequently the top of the stove is without obstructionabove its level to interfere with the movement of articles thereon ashas been the very objectionable character of previous constructions forthe general purpose of my apparatus.

lIlaving described my invention, I claim:

1. ln a gas stove, a burner, a rest above said burner, a duct leading tosaid burner, a valve for Acontrolling said duct, mechanism forauttmiatically operating said valve, means movable relatively to saidrest and adapted to be engaged by an article on said rest, and a detentfor engaging said mechanism and preventing it from operating said valve,said detent being connected with said means and held in engagement'ywith said mechanism by the pressure of said article acting through saidmeans.

2. In a gas stove, a burner, means for supporting an article above saidburner, a movable device adapted to lie when at rest beneath the top ofsaid supporting.means, a duct leading to said burner, a valve forcontrolling the [low through said duct, mechanism for automaticallyclosing said valve, and connected with said device a detent for engagingsaid mechanism and preventing it from operating said valve, said detentbeing held in position to hold said mechanism by said article on saiddevice, and said detent releasing said mechanism when said article iswithdrawn from said device.

ln a gas stove, a support, a burner be- I burner neath said support, agas duct leading to said burner, a valve for controlling; said duct, aspring, mechanism acted upon by said spring for closing said valve, amovable device having its upper part disposed when at rest beneath thetop oit said snpport, and means tor opening said valve and moving` saidmechanism against the action of said spring, and connected with saiddevice a detent which automatically engages said mechanism in itsposition when said valve is cpcn, said detent beings),- caused to holdsaid mechanism by the action of an article resting on said device andbeing automatically disengaged from said mechanism upon thenf'ithdraival oit' said article from said device.

t. In a gas stove, a stationary top, a

beneath said top, a duct leading to said burner, a valve for controlling.said duct, a lever for operating said valve, a slide, means forconnecting said lever and slide, means adapted to act on said slide toclose said valve, a rocking` arm disposed when at rest beneath the uppersurface of said tcp, and a detent pivotally connected to said arm andadapted to be held by said arm in engagement- With said slide t0 holdsaid valve open.

In Witness whereof l have hereunto set my naine this 20th day ofFebruary, 1909, in the presence of the subscribing Witnesses.

CHARLES B. STHVELL.

.litnesscs Jos. G. DENNY, Jr.,

ROBERT JAMES LARLEY.

